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WO2006048147A1 - Module d'airbag frontal pour automobile - Google Patents

Module d'airbag frontal pour automobile Download PDF

Info

Publication number
WO2006048147A1
WO2006048147A1 PCT/EP2005/011410 EP2005011410W WO2006048147A1 WO 2006048147 A1 WO2006048147 A1 WO 2006048147A1 EP 2005011410 W EP2005011410 W EP 2005011410W WO 2006048147 A1 WO2006048147 A1 WO 2006048147A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
module according
inner shell
region
envelop
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2005/011410
Other languages
German (de)
English (en)
Inventor
Marcus Weber
Thomas Reiter
Klaus-Peter Kuhne
Marc Schock
Jörg ALBERT
Karl-Heinz Sommer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Autoliv Development AB
Original Assignee
Autoliv Development AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Autoliv Development AB filed Critical Autoliv Development AB
Publication of WO2006048147A1 publication Critical patent/WO2006048147A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/233—Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2346—Soft diffusers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/233—Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
    • B60R2021/23324—Inner walls crating separate compartments, e.g. communicating with vents

Definitions

  • the invention relates to a front airbag module for a motor vehicle according to the preamble of claim 1.
  • the module for a passenger airbag is usually in Armaturen ⁇ board above the glove compartment.
  • the airbag cover In the fully expanded state, the airbag cover has a pointing in the direction of the passenger impact area and a support area, which rests on components of the vehicle.
  • the gas bag cover can in this case be designed such that one part of the support region rests against the inside of the windshield and another part on the dashboard.
  • a fundamental problem with the use of gas bags is that occupants not sitting in standard sitting position (out of position - OoP -) may not be loaded too heavily by the outgoing gas bag.
  • a particularly critical case in this case is the situation in which a child of, for example, 6 years bent forward sitting in the passenger seat and whose head is located directly in front of the dashboard.
  • the gas bag of the gas bag module according to the invention is formed in two parts with an outer shell and an inner shell.
  • the inner shell immediately adjoins the inflow region of the gas, so that all the gas or at least a large part of the gas must first flow through the partial gas space enclosed by the inner shell before it enters the main gas space, which is located between inner shell and outer shell ,
  • the maximum volume of the partial gas space is relatively small compared to the maximum volume of the total gas space, that is, the maximum extent of the inner shell into the passenger compartment is small in proportion to the maximum extent of the outer shell.
  • At least one opening in the inner shell is designed as a guide element, which directs the gas into a region between the impact area and a lower support area of the outer shell. This is achieved by moving from a central Section of the inner shell at least one hose-like portion (19) extends, the open end, which forms the opening is located in fully expanded airbag in the region of the occupant facing the end of Prallab ⁇ section.
  • the pressure in the partial gas space can be significantly higher than the pressure in the main gas space.
  • the unfolding of the outer shell can be done with relatively little force, so that the upper body of the child with ver man Struktur ⁇ tively low introduction of force line pressed into an upright position can be.
  • the gas is wholly or partly first directed into a lower region of the unfolding outer shell.
  • the gas flow can be deflected so that the unfolding of the outer shell takes place in a manner which is gentle on the OoP occupant.
  • two gas-conducting openings are present in the inner shell, which introduce the gas left and right of a central region in the main gas space. If there is no out-of-position situation, the gas bag can thus develop freely, the presence of the réellehülie from the outside is not noticeable.
  • FIGS. 1 to 5 show the deployment of an airbag having an inner shell in the presence of a dumbbell which has been bent over in front of an approximately 6-year-old child;
  • FIG. 5a shows a section along the plane B-B of Figure 5.
  • FIGS. 6-10 show a front airbag module according to the described exemplary embodiment in a representation corresponding to FIGS. 1-5 and FIG. 11 a section along the plane A-A from FIG. 10.
  • Figures 1 to 5 show a front airbag module, the gas bag has an Au ⁇ .hülle and an inner shell, and its mode of operation in the presence of a 6-year-old representing dummies D, which sits bent over front in the passenger seat.
  • the components of the front gas bag module will be explained with reference to FIG. 5:
  • the gas bag module has an airbag housing 10 accommodated in the dashboard A with a gas generator 12.
  • the gas bag consists of an outer shell 14 and an inner shell 16.
  • the inner shell 16 adjoins the gas bag housing 10 directly, so that all gas coming from the gas generator 12 has to flow through the gas compartment 17 enclosed by the inner shell 16. From there, the gas flows through gas-conducting openings 18 in the located between the inner shell 16 and outer shell 14 main gas space 15. The total gas space is thus divided into the main gas chamber 15 and the partial gas chamber 17.
  • the outer shell 14 generally has at least one ventilation opening, through which the gas flows.
  • the pressure in the main gas space 15 is limited. Because the gas first flows into the partial gas space 17 and from there into the main gas space 15, from which it can only escape again, the pressure in the partial gas space 17 is higher than in the main gas space 15 Gas generator power and ventilation opening are usually dimensioned such that the pressure in the main gas space 15 corresponds to that of a "normal" passenger gas bag. If, in a standard situation, the strapped or unbelted occupant falls into the fully expanded airbag, it reacts like a normal airbag. The presence of the inner shell 16 is not felt.
  • the improvement comes in out-of-position situations, especially in out-of-child positions.
  • the behavior of the system is shown in FIGS. 1 to 5 when a dummy representing a 6-year-old child rests bent over the armature board at the beginning of the gas bag deployment.
  • the partial gas space has a substantially circular cross-section.
  • the head rests against the inner shell 16 and thus also against the outer shell 14 and clamps the outer shell 14.
  • the outer casing 14 can not expand upwards and therefore initially begins to expand forwards and downwards, as can be seen in particular in FIGS. 2 and 3.
  • the outer shell 14 unfolds between dashboard A and the dummy D, so that the upper body of the dummy is pressed gradually into an upright position with relatively little force.
  • This type of deployment is essentially supported by the position of the gas-conducting openings 18.
  • the gas-conducting openings are located at a location of the inner shell 16, which is adjacent to the lower support portion 14c of the outer shell.
  • the gas flow is directed into an area which is located between the impact area 14a and the lower support area 14c.
  • the main gas space is thereby filled in a certain way from bottom to top.
  • two gas-conducting openings 18 are present in the inner shell 16. These are arranged so that two gas streams spread to the left and right of a central region 15a in the main gas space 15. This causes an additional relief of the head and chest area of the dummy or the occupant, since the dummy / inmate is not flowing directly.
  • lower support region 14c and impact region 14a are sewn together via sacrificial seams 20. These break up during the gas pocket unfolding, dissipating energy in this section. This leads to a further protection especially of the chest area of the occupant.
  • FIGS. 6 to 11 show an embodiment of the invention.
  • the inner shell 16 has a central portion 16a and two hose-like portions extending from this central portion 16a, hereinafter referred to as hose portions 19.
  • the two tube sections 19 extend to the left and to the right of the central region 15a of the main gas space 15.
  • the tube sections 19 whose end faces are open and thus form the gas-conducting openings 18 of the inner envelope 16 end in the vicinity of the impact area 14a of the outer envelope 14 in a transition region between the impact area 14a and the lower Ab ⁇ support area 14c, which rests on the dashboard A.
  • FIGS. 8 and 9 the unfolding of the outer shell 14 of FIG particularly supported below, so that the head of the occupant is additionally discharged.
  • the occupant's chest region only senses the internal pressure of the main gas chamber and not the higher pressure of the partial gas chamber 17. A direct flow of the occupant does not take place.
  • hose sections may be useful to connect the hose sections to the outer shell 14, in particular to the lower support area 14, for example to sew it.
  • sacrificial sutures 20 may be present as described above.
  • the volume of the partial gas space 17 must be substantially less than the volume of the entire gas space. Preferably, the volume is less than 25% of the total volume.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

L'invention concerne un module d'airbag frontal pour automobile, comprenant un générateur de gaz (12) et un sac gonflable pouvant être rempli par le générateur de gaz et pourvu d'une enveloppe extérieure (14) entourant l'ensemble de l'espace gazeux. Ladite enveloppe extérieure présente, lorsque le sac gonflable est entièrement déployé, une zone d'impact (14a), une zone d'appui inférieure (14c) suitée contre le tableau de bord (A) et une zone d'appui supérieure (14b), située contre le pare-brise (W). Il est prévu dans l'enveloppe extérieure (14) une enveloppe intérieure (16) entourant un espace gazeux partiel (17), au moins une grande partie du gaz provenant du générateur de gaz (12) parvenant d'abord dans l'espace gazeux partiel (17) et de là, dans l'espace gazeux principal (15), par des ouvertures (18) situées dans l'enveloppe intérieure (16), entre l'enveloppe intérieure (16) et l'enveloppe extérieure (14). Afin d'améliorer la protection d'un enfant basculé vers l'avant, une ouverture (18) est conçue sous forme d'élément véhiculant le gaz, qui guide le gaz dans une zone située entre la zone d'impact (14a) et la zone d'appui inférieure(14c). A cet effet, au moins une section tubulaire (19) part d'une section centrale (16a) de l'enveloppe intérieure (16), son extrémité ouverte constituant l'ouverture (18) se situant quant à elle dans la zone de l'extrémité de la section d'impact tournée vers le passager, lorsque le sac gonflable est entièrement déployé.
PCT/EP2005/011410 2004-11-03 2005-10-25 Module d'airbag frontal pour automobile Ceased WO2006048147A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410053674 DE102004053674B4 (de) 2004-11-03 2004-11-03 Frontgassack-Modul für ein Kraftfahrzeug
DE102004053674.0 2004-11-03

Publications (1)

Publication Number Publication Date
WO2006048147A1 true WO2006048147A1 (fr) 2006-05-11

Family

ID=35500937

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/011410 Ceased WO2006048147A1 (fr) 2004-11-03 2005-10-25 Module d'airbag frontal pour automobile

Country Status (2)

Country Link
DE (1) DE102004053674B4 (fr)
WO (1) WO2006048147A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112006004067T5 (de) 2006-10-17 2009-08-13 Autoliv Development Ab Sicherheitsanordnung
WO2015036527A1 (fr) * 2013-09-13 2015-03-19 Autoliv Development Ab Système à sac gonflable, siège de véhicule automobile comportant un système à sac gonflable et procédé d'activation d'un système à sac gonflable

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6846191B2 (ja) * 2016-12-19 2021-03-24 芦森工業株式会社 エアバッグ装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5957486A (en) * 1996-08-02 1999-09-28 Denso Corporation Air bag device and method for folding an air bag
DE19926425A1 (de) * 1999-06-10 2000-12-14 Opel Adam Ag Aufblasvorrichtung für eine Airbageinheit
US20010007391A1 (en) * 1997-12-09 2001-07-12 Toyota Jidosha Kabushiki Kaisha Air bag apparatus for passenger seat
US6361067B1 (en) * 1998-12-18 2002-03-26 Delphi Technologies, Inc. Airbag with interior deflection device
US20020135164A1 (en) * 2001-03-22 2002-09-26 Thomas Scott David Automotive vehicle air bag system
US20040021304A1 (en) * 2001-06-08 2004-02-05 Toshinori Tanase Side airbag device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5160164A (en) * 1991-06-05 1992-11-03 Trw Vehicle Safety Systems Inc. Gas deflection device for an air bag assembly
DE10018170B4 (de) * 2000-04-12 2012-10-31 Audi Ag Luftsackanordnung
JP4100129B2 (ja) * 2002-10-28 2008-06-11 タカタ株式会社 エアバッグ装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5957486A (en) * 1996-08-02 1999-09-28 Denso Corporation Air bag device and method for folding an air bag
US20010007391A1 (en) * 1997-12-09 2001-07-12 Toyota Jidosha Kabushiki Kaisha Air bag apparatus for passenger seat
US6361067B1 (en) * 1998-12-18 2002-03-26 Delphi Technologies, Inc. Airbag with interior deflection device
DE19926425A1 (de) * 1999-06-10 2000-12-14 Opel Adam Ag Aufblasvorrichtung für eine Airbageinheit
US20020135164A1 (en) * 2001-03-22 2002-09-26 Thomas Scott David Automotive vehicle air bag system
US20040021304A1 (en) * 2001-06-08 2004-02-05 Toshinori Tanase Side airbag device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112006004067T5 (de) 2006-10-17 2009-08-13 Autoliv Development Ab Sicherheitsanordnung
DE112006004067B4 (de) 2006-10-17 2020-07-30 Autoliv Development Ab Sicherheitsanordnung
WO2015036527A1 (fr) * 2013-09-13 2015-03-19 Autoliv Development Ab Système à sac gonflable, siège de véhicule automobile comportant un système à sac gonflable et procédé d'activation d'un système à sac gonflable

Also Published As

Publication number Publication date
DE102004053674A1 (de) 2006-06-14
DE102004053674B4 (de) 2008-09-25

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